Intercommunication unit



FIG. 1 is a front elevational view of the intercommunication unit showing our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof, the right side being a mirror image thereof;

FIG. 4 is a plan view thereof; and

FIG. 5 is a bottom view thereof. 

The ornamental design for an intercommunication unit, as shown and described. 